CN107119990B - Idle running safety door lock - Google Patents

Abstract

The invention discloses an idle running safety door lock, comprising: a front panel assembly including a front base and a front handle rotatably provided on the front base; a rear panel assembly, a rear base and a rear handle rotatably provided on the rear base; a lock body; the transmission piece is rotatably arranged on the front panel assembly and/or the rear panel assembly, the transmission piece is connected with the lock body, and the transmission piece can be driven to rotate when the front handle and the rear handle rotate so as to control the unlocking and locking actions of the lock body; the front panel assembly is provided with a lock cylinder, the front handle is connected with the transmission piece through a clutch mechanism, and the lock cylinder can switch the engagement and disengagement states between the front handle and the transmission piece through the clutch mechanism. The door lock has the advantages that looseness and damage of all parts of the door lock can be effectively avoided, the service life is prolonged, violent cracking of the front panel assembly caused by forcibly screwing the front handle can be prevented, the safety anti-theft performance of the door lock is effectively improved, and the door lock is convenient to use.

Description

An idling safety door lock

Technical field

The present invention relates to the field of locks, and in particular to a door lock.

Background technique

Door locks are usually installed on the door and include a front panel assembly, a rear panel assembly, a lock body and a transmission part. The front handle on the front panel assembly and the rear handle on the rear panel assembly can drive the transmission part to rotate and thereby control the lock body. To unlock the door, a lock cylinder is usually provided on the front panel assembly, and the lock cylinder is used to lock or unlock the door lock. In existing door locks, the lock cylinder is usually locked on the front base by locking the front handle. When locking, the front handle is always connected to the transmission part. When opening the door, the user usually twists the front handle tentatively to determine whether the door lock is locked. After a long period of frequent twisting, the front handle The locking structure between the front base and the front base is prone to loosening and breakage, which will affect the service life of the door lock. At the same time, this type of door lock is also easy to violently crack by forcibly twisting the front handle, and has poor safety performance.

On the other hand, the rear panel assembly of the door lock is usually provided with an anti-locking piece, which can be used to lock the door lock from inside the house. In existing door locks, the anti-locking piece usually operates synchronously with the lock cylinder, and the front actuator The hand, the transmission part and the rear handle are usually connected together. In this way, after the door lock is locked with the anti-locking part, the anti-locking part must be unlocked to unlock the door lock. When people need to escape from unexpected situations such as fires and earthquakes, people People who are nervous often forget to unlock the anti-lock first, which will lead to a waste of time in the process of opening the door. When there are many people escaping, if the door lock cannot be opened in time and convenience, it is easy to form a crowd at the door, further wasting Escape time may cause serious accidents.

Contents of the invention

In order to solve the above problems, the object of the present invention is to provide an idling safety door lock with a novel structure, long service life and high safety performance.

The technical solutions adopted by the present invention to solve the technical problems are:

An idle safety door lock, including:

The front panel assembly includes a front base and a front handle rotatably arranged on the front base;

Rear panel assembly, rear base and rear handle rotatably provided on the rear base;

lock body;

A rotatable transmission member, which is connected to the lock body. When the front handle and the rear handle rotate, the transmission member can be driven to rotate to control the unlocking and locking actions of the lock body;

The front panel assembly is provided with a lock core, and the front handle is connected to the transmission member through a clutch mechanism. The lock core can switch the position between the front handle and the transmission member through the clutch mechanism. Engaged and disengaged states.

Preferably, the clutch mechanism includes a locking rod rotatably provided on the front panel assembly and a clutch member disposed on the front panel assembly that can move forward and backward. The locking rod can be driven to rotate by the lock core and when When it rotates, the clutch member can be driven to move forward and backward to engage or separate the clutch member from the transmission member. The clutch member is transmission connected with the front handle and can rotate synchronously with the front handle.

Preferably, the locking rod is provided with a guide block or an inclined guide surface, and the clutch is provided with an inclined guide surface or guide block correspondingly, and the guide block is adapted to the guide surface. The locking rod slides against the guide surface, and when the locking rod rotates, the guide block and the guide surface can push the clutch member to move in the front and rear direction.

Preferably, an elastic return member is provided between the clutch member and the front panel assembly, and the elastic return member can press the guide block against the guide surface.

Preferably, the clutch part is provided with a clutch part or a clutch groove, and the transmission part is correspondingly provided with a clutch groove or clutch part. The clutch part is adapted to the clutch groove, and as the clutch part moves forward and backward, The clutch part can be inserted into the clutch groove or disengaged from the clutch groove to engage or separate the clutch element from the transmission element, and when the clutch part is inserted into the clutch groove, the clutch element can pass through the clutch groove. The clutch part cooperates with the clutch groove to rotate synchronously with the transmission part.

Preferably, the transmission part is in the shape of a hollow square tube, the locking rod is rotatably inserted into the square tube of the transmission part, the clutch part is the front part of the transmission part, and the clutch groove is A square groove is provided on the clutch and matches the front part of the square cylinder.

Preferably, the rear handle is drivingly connected to the transmission member and can drive the transmission member to rotate synchronously. The rear panel assembly is rotatably provided with an anti-locking piece. The anti-locking piece is drivingly connected to the locking rod and can drive the locking member. The locking lever turns.

The beneficial effects of the present invention are: in the present invention, because the front handle is connected to the transmission member through a clutch mechanism, the lock core can switch the engagement and separation states between the front handle and the transmission member through the clutch mechanism. , when a key or the like is used to drive the lock cylinder to unlock, the lock cylinder can combine the front handle with the transmission part through the clutch mechanism, so that when the front handle is twisted, the lock body can be driven by the transmission part. When the key or the like is used to drive the lock cylinder When locking, the clutch mechanism can be used to separate the front handle from the transmission member. After locking, the front handle can still rotate when the front handle is twisted, but it cannot drive the transmission member to rotate and drive the lock body to move. It effectively prevents the various components of the door lock from loosening and being damaged, prolongs the service life, and prevents violent cracking of the front panel assembly by forcibly twisting the front handle, effectively improving the safety and anti-theft performance of the door lock; on the other hand, When locking through the lock cylinder, it only separates the front handle from the transmission part, which does not affect the rotation of the transmission part driven by the rear handle. After using the rear handle to open the lock body, it will not affect the locked state of the lock core. Any The door lock can be unlocked from inside the house at all times, which can effectively prevent the user from being locked in the house by others, and also prevent the user from being unable to lock the door after going out because the key is not left, which is effectively convenient for use.

Description of the drawings

The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

Figure 1 is an overall structural diagram of the present invention;

Figure 2 is a partially exploded view of the present invention;

Figure 3 is a partial enlarged view of part A in Figure 2;

Figure 4 is a partially exploded view of the front panel assembly of the present invention;

Figure 5 is a partial enlarged view of part B in Figure 4;

Figure 6 is a partially exploded view of the rear panel assembly of the present invention;

FIG. 7 is a partial enlarged view of part C in FIG. 6 .

Detailed ways

Referring to Figures 1 to 7, an idle safety door lock includes: a front panel assembly 10, including a front base 11 and a front handle 12 rotatably provided on the front base 11; a rear panel assembly 20, a rear base 21 and a rear handle 22 rotatably arranged on the rear base 21; a lock body 30; a rotatable transmission member 40, the transmission member 40 is connected to the lock body 30, and the front handle 12 and the rear handle 22 can drive the transmission when they rotate The member 40 rotates to control the unlocking and locking actions of the lock body 30; the front panel assembly 10 is provided with a lock core 13, and the front handle 12 is connected to the transmission member 40 through a clutch mechanism. The lock core 13 can switch the front handle through the clutch mechanism. The engagement and separation states between the hand 12 and the transmission member 40. In the present invention, since the front handle 12 is connected to the transmission member 40 through a clutch mechanism, the lock cylinder 13 can switch the engagement and separation states between the front handle 12 and the transmission member 40 through the clutch mechanism. When the key 70 or the like is used to drive the lock cylinder 13 When unlocking, the lock cylinder 13 can combine the front handle 12 with the transmission member 40 through the clutch mechanism, so that when the front handle 12 is twisted, the lock body 30 can be driven by the transmission member 40. When the key 70 or the like is used to drive the lock cylinder 13 When locking, the front handle 12 can be separated from the transmission member 40 through the clutch mechanism. After locking, when the front handle 12 is twisted, the front handle 12 can still rotate, but it cannot drive the transmission member 40 to rotate and drive the lock. The movement of the body 30 can effectively prevent the various components of the door lock from loosening and being damaged, prolonging the service life, and can also prevent violent cracking of the front panel assembly 10 by forcibly twisting the front handle 12, effectively improving the safety of the door lock. Anti-theft performance; on the other hand, when locking through the lock cylinder 13, it only separates the front handle 12 from the transmission member 40, which does not affect the rear handle 22 driving the transmission member 40 to rotate. The rear handle 22 is used to open the lock body. It will not affect the locked state of the lock cylinder 13 after 30 years, and the door lock can be unlocked from inside the house at any time, which can effectively prevent the user from being locked in the house by others, and can also avoid being unable to lock the door after leaving the house because the key 70 is not left. The locked case is effective and convenient for use.

In this embodiment, the transmission member 40 is provided on the front panel assembly 10, which helps ensure the normal operation of the clutch mechanism, avoids failure of the clutch mechanism due to assembly errors and other factors, and facilitates the installation and use of the door lock. Of course, in practical applications, the transmission member 40 can also be installed on the rear panel assembly 20 or the lock body 30, or can also be directly and rotatably installed on the door body. The lock cylinder 13 and the lock body 30 are widely used in the field, and their structures and principles are well known to those skilled in the art. They will not be described in detail here. The lock cylinder 13 in this embodiment adopts the commonly used method of unlocking by the key 70. Or locking structure. Of course, in actual applications, the lock cylinder 13 can also adopt other common structures such as commonly used fingerprint lock cylinders, sealing cylinders, etc., and is not limited thereto.

In the present invention, the clutch mechanism includes a locking rod 51 rotatably provided on the front panel assembly 10 and a clutch member 52 disposed on the front panel assembly 10 that can move forward and backward. The locking rod 51 can be driven to rotate by the lock core 13 and when its When rotating, the clutch member 52 can be driven to move forward and backward to engage or separate the clutch member 52 from the transmission member 40. The clutch member 52 is transmission connected with the front handle 12 and can rotate synchronously with the front handle 12. The structure of the clutch mechanism is simple and reliable, and takes up less space. It is small in size and easy to process and assemble. Of course, in actual applications, the clutch mechanism can also be replaced by other commonly used structures with clutch functions, and is not limited to this.

In this embodiment, the front handle 12 is provided with a long guide groove 121, and the clutch member 52 is provided with a guide block 523 that is slidably inserted into the guide groove 121. The cooperation between the guide block 523 and the guide groove 121 makes it possible to The clutch member 52 can move forward and backward relative to the front handle 12 and can rotate with the front handle 12. Of course, in practical applications, the clutch member 52 can also use other common structures such as guide rails to be transmission connected with the front handle 12 and with the front handle 12. 12 Synchronous rotation is not limited to this. The lock core 13 is provided with a first insertion hole 131 at the rear, and the front part of the lock rod 51 is inserted into the first insertion hole 131 so that the lock core 13 can drive the lock rod 51 to rotate.

In the present invention, the locking rod 51 is provided with a guide block 511 or an inclined guide surface 521, and the clutch member 52 is provided with an inclined guide surface 521 or a guide block 511. The guide block 511 and the guide surface 521 Adapted and slidably abutted on the guide surface 521, when the locking rod 51 rotates, the clutch member 52 can be pushed to move in the front and rear direction through the guide block 511 and the guide surface 521. The structure is simple and reliable, and is easy to process and assemble. Of course, , in practical applications, the locking rod 51 can also be used, or a common structure such as a threaded structure can be used to drive the clutch member 52 to move forward and backward. It is not limited to this. In this embodiment, the guide block 511 is set on the locking rod 51. The guide surface 521 is provided at the front end of the clutch member 52. Of course, in practical applications, the positions of the guide block 511 and the guide surface 521 can be exchanged. In addition, an elastic return member 53 is provided between the clutch member 52 and the front panel assembly 10. The elastic return member 53 can press the guide block 511 against the guide surface 521 and maintain the relationship between the guide block 511 and the guide surface 521. Good contact, and has the function of pushing the clutch member 52 forward to reset, which helps to simplify the structure and facilitate use. In this embodiment, the elastic return member 53 uses a commonly used spring. Of course, in practical applications, the elastic return member 53 also Other commonly used elastic structures such as torsion springs may be used, or the elastic return member 53 may not be provided, but other commonly used structures may be used to push the clutch member 52 to reset. For example, an inclined guide groove and a guide block may be provided on the clutch member 52 511 is slidably inserted into the guide groove, and the front inner wall and the rear inner wall of the guide groove are used as the guide surface 521. In this way, the locking rod 51 can drive the clutch member 52 to move forward and backward.

The clutch member 52 is provided with a clutch portion or a clutch groove 522, and the transmission member 40 is provided with a clutch groove 522 or a clutch portion correspondingly. The clutch portion matches the clutch groove 522. As the clutch member 52 moves forward and backward, the clutch portion can Insert into the clutch groove 522 or disengage from the clutch groove 522 to engage or separate the clutch member 52 from the transmission member 40 , and when the clutch part is inserted into the clutch groove 522 , the clutch part 52 can cooperate with the clutch groove 522 Rotating synchronously with the transmission member 40, the clutch structure is relatively simple, easy to process and assemble, highly reliable, and less prone to failure. Of course, in practical applications, common structures such as pins and pin holes can also be used to realize the coupling of the clutch member 52 with the transmission. The combination and separation of the parts 40 are not limited to this.

In this embodiment, the transmission member 40 is in the shape of a hollow square cylinder, which is also a common structure of the transmission member 40 in existing door locks. The locking rod 51 is rotatably inserted into the square cylinder of the transmission member 40, which facilitates assembly and enables alignment. The locking rod 51 is limited, which also helps to reduce the space occupied by the locking rod 51, thereby reducing the volume of the door lock. The clutch part is the front part of the transmission part 40, and the clutch groove 522 is provided on the clutch part 52 and connected with it. The matching square groove at the front of the square cylinder has a simple structure and is easy to process and assemble. Of course, in practical applications, the clutch groove 522 and the transmission member 40 can also adopt other common shapes such as triangles and hexagons, and are not limited to this.

In addition, in the present invention, the rear handle 22 is drivingly connected to the transmission member 40 and can drive the transmission member 40 to rotate synchronously. The rear panel assembly 20 is rotatably provided with an anti-locking piece 23. The anti-locking piece 23 is drivingly connected to the locking rod 51. The lock rod 51 rotates, so that after the anti-locking part 23 is counter-locked, it will only drive the clutch part 52 forward through the lock rod 51 to separate from the transmission part 40 to prevent the door lock from being opened from the outside, and will not affect the rear handle 22 The influence of rotation and unlocking can effectively prevent the user from being too nervous in an unexpected situation and forgetting to open the anti-locking piece 23, resulting in the inability to open the door lock. This avoids wasting escape time and crowding and stampede accidents, and effectively improves the escape efficiency of the escapees. . In this embodiment, the rear handle 22 is provided with a square connection hole 221, and the rear part of the transmission member 40 can be slid forward and backward in the connection hole 221, so that the transmission member 40 can rotate behind the handle 22, and it is also convenient to It is convenient to adjust the distance between the front panel assembly 10 and the rear panel assembly 20 to adapt to different thicknesses, and facilitate installation and use. The anti-locking member 23 in this embodiment is provided with a third anti-locking member 23 that matches the rear portion of the locking rod 51. The rear part of the locking rod 51 is inserted into the second insertion hole 231 so that the anti-locking piece 23 can drive the locking rod 51 to rotate.

In addition, in this embodiment, a return torsion spring 60 is provided between the front handle 12 and the front base 11 and between the rear panel and the rear base 21 to push the front handle 12 and the rear handle 22 after they are rotated. The front handle 12 and the rear handle 22 rotate to reset; the lock body 30 has a square transmission hole 31 that matches the transmission member 40, and the transmission member 40 is inserted into the transmission hole 31 so that the transmission member 40 can drive the lock. These structures are widely cited in the art and will not be described in detail here.

The above are only preferred embodiments of the present invention. As long as the technical solutions achieve the purpose of the present invention by basically the same means, they all fall within the protection scope of the present invention.

Claims (1)

1. An idle safety door lock comprising: a front panel assembly (10) including a front base (11) and a front handle (12) rotatably provided on the front base (11); a rear panel assembly (20), a rear base (21) and a rear handle (22) rotatably provided on the rear base (21); a lock body (30); the rotatable transmission piece (40), the transmission piece (40) is connected with the lock body (30), and the transmission piece (40) can be driven to rotate when the front handle (12) and the rear handle (22) rotate so as to control the unlocking and locking actions of the lock body (30); the front panel assembly (10) is provided with a lock cylinder (13), the front handle (12) is connected with the transmission piece (40) through a clutch mechanism, and the lock cylinder (13) can switch the joint and separation states between the front handle (12) and the transmission piece (40) through the clutch mechanism;

the clutch mechanism comprises a lock rod (51) rotatably arranged on the front panel assembly (10) and a clutch piece (52) movably arranged on the front panel assembly (10) back and forth, the lock rod (51) can be driven by the lock cylinder (13) to rotate and can drive the clutch piece (52) to move back and forth when the lock rod rotates so as to enable the clutch piece (52) to be engaged with or separated from the transmission piece (40), and the clutch piece (52) is in transmission connection with the front handle (12) and can synchronously rotate with the front handle (12);

the lock rod (51) is provided with a guide block (511) or an inclined guide surface (521), the clutch piece (52) is correspondingly provided with the inclined guide surface (521) or the guide block (511), the guide block (511) is matched with the guide surface (521) and is in sliding contact with the guide surface (521), and the clutch piece (52) can be pushed to move along the front-back direction through the guide block (511) and the guide surface (521) when the lock rod (51) rotates;

an elastic reset piece (53) is arranged between the clutch piece (52) and the front panel assembly (10), and the elastic reset piece (53) can press the guide block (511) on the guide surface (521);

the clutch part (52) is provided with a clutch part or a clutch groove (522), the transmission part (40) is correspondingly provided with the clutch groove (522), the clutch part is matched with the clutch groove (522), the clutch part can be inserted into the clutch groove (522) or separated from the clutch groove (522) along with the forward and backward movement of the clutch part (52) so as to enable the clutch part (52) to be engaged with or separated from the transmission part (40), and when the clutch part is inserted into the clutch groove (522), the clutch part (52) can synchronously rotate with the transmission part (40) through the cooperation of the clutch part and the clutch groove (522);

the transmission part (40) is in a hollow square cylinder shape, the lock rod (51) is rotatably inserted into the square cylinder of the transmission part (40), the clutch part is the front part of the transmission part (40), and the clutch groove (522) is a square groove which is arranged on the clutch part (52) and is matched with the front part of the square cylinder;

the rear handle (22) is in transmission connection with the transmission piece (40) and can drive the transmission piece (40) to rotate synchronously, the rear panel assembly (20) is rotatably provided with the counter lock piece (23), and the counter lock piece (23) is in transmission connection with the lock rod (51) and can drive the lock rod (51) to rotate.